Pupillary responses to light are usually present but sluggish between which gestational ages?

Enhance your readiness for the MEDNAX Neonatal Nurse Practitioner Exam. Utilize flashcards, multiple-choice questions, and detailed explanations. Equip yourself for success!

Multiple Choice

Pupillary responses to light are usually present but sluggish between which gestational ages?

Explanation:
Pupillary responses to light reflect maturation of the autonomic pathways controlling the iris and the brainstem circuits involved in the reflex. In very preterm infants, these pathways are still developing, so the reflex can be present but sluggish. This sluggishness is commonly observed around 28–32 weeks' gestation. By about 34–36 weeks, the response is more brisk and reliable, and by term it is typically brisk. So the best answer is that pupillary responses to light are usually present but sluggish between 28 and 32 weeks gestation.

Pupillary responses to light reflect maturation of the autonomic pathways controlling the iris and the brainstem circuits involved in the reflex. In very preterm infants, these pathways are still developing, so the reflex can be present but sluggish. This sluggishness is commonly observed around 28–32 weeks' gestation. By about 34–36 weeks, the response is more brisk and reliable, and by term it is typically brisk. So the best answer is that pupillary responses to light are usually present but sluggish between 28 and 32 weeks gestation.

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